Examiner Masahiko Muranami

Appears inactive Last observed office action: December 2020 (63 months ago).

Examiner Masahiko Muranami appears to be very difficult relative to their art unit, group, tech center, and USPTO peers. Their lifetime grant ratio is 46.2%, they average 2.84 office actions per granted patent, and their rejection profile is dominated by §103.

Difficulty vs AU About Average

Difficulty vs Group Very Hard

Difficulty vs TC Very Hard

Difficulty vs USPTO Very Hard

Average OA / Grant 2.84

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Examiner Details

Observed Examiner Years: 5 years (2016-2020)
Tech Center: 3700 - Mechanical Engineering, Manufacturing and Products
Group: 3760 - Refrigeration, Vaporization, Ventilation, and Combustion

Metrics

Applications Evaluated: 171
Granted Applications: 79
Non-Granted Applications: 92
Avg OA / Grant: 2.84
Last OA Observed: December 2020 (63 months ago)
Art Units Seen: 3742 , 3761
Work Groups Seen: 3740 - Thermal and Combustion Technology, Motive and Fluid Power Systems

3760 - Refrigeration, Vaporization, Ventilation, and Combustion

Context Comparison

Scope	Examiners	Lifetime Grant Ratio	Avg OA / Grant
This Examiner	1	46.2%	2.84
Art Unit	80	40.8%	2.17
Group	377	50.6%	2.11
Tech Center	2,632	49.9%	2.01
USPTO	16,116	54.8%	1.98

Grant Timeline

Shaded region marks the last two observed years, where grant outcomes may lag due to recency.

Year	Applications	Granted	Grant Rate
No observed data before 2016; examiner may not yet have been active in the available dataset.
2016	2	0	0.0%
2017	24	2	8.3%
2018	59	28	47.5%
2019	38	22	57.9%
2020	48	27	56.3%
No observed data after 2020; examiner may have gone inactive or moved out of examining work.

79 family-cache-validated grants; 0 OA-only grant signals.

Rejection Timeline

OA #	Office Actions	§ 101 Percentage	§ 102 Percentage	§ 103 Percentage	§ 112 Percentage
1	181	0.0%	2.8%	97.2%	0.0%
2	142	0.0%	5.6%	92.3%	2.1%
3	82	0.0%	2.4%	97.6%	0.0%
4	47	0.0%	6.4%	93.6%	0.0%
5	10	0.0%	0.0%	100.0%	0.0%
6	3	0.0%	0.0%	100.0%	0.0%